Personally, for the cost you would incur for stripping the Chrome off, you could probably buy polished or pre-coated rims to fit your needs and have those prepped for powder.

Color matching I presume is your key here as you want all these trim bits to match. If that's the case polished or non-polished aluminum rims without any colored coatings would be ideal. Those can be more economically prepped.

Good luck!